Features:
1.High quality of harden steel material, stronger and more durable.
2.Fits: 1/18 TRX4M
3.Helical teeth, smooth operation.
4.Coming with the spool locker, replacing the stock gears.
5.Ring gear: 22T; Pionin 13T. Overdrive 16%
You will receive:
-Gears Set 2sets
-Hardware